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ID:33371579
大小:4.14 MB
页数:42页
时间:2019-02-24
《【7A文】Hydraulics Applications(钻井设计中的水力应用).ppt》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、HydraulicsApplicationsPERFORM2ObjectivesProvidebasicunderstandingofMudRheologyandmodelsProvidebasicunderstandingandapplicationofdrillstringhydraulics3HydraulicsSoftwareToolstoestimatepressurelosses4RheologicalModelsBitandReamerNozzleSelectionandOptimizationPressureLossCalculationsforMWD
2、/LWDToolsMotorPerformanceExtendedCirculatingCapacitiesChokelines,RiserlessDrilling,MudliftHoleCleaningEfficiencySwabandSurgePressureCalculation4NecessarySoftwareFeaturesFeatureBenefitPressureDropAnalysisBetterrepresentationoflowshearratebehaviorBettertransitiontoturbulenceMWD/LWDtoolsmo
3、deledBitOptimizationWHEREDIDALLMYPUMPPRESSUREGO?CuttingsTransportSemi-empiricalmodelvalidfordeviated/horizontalwellboresCriticalflowrate,wellsectionanddeviationcalculatedSensitivitytoROPPipeeccentricityandrotationMotorPerformance“PowerDrilling”supportedStallToggleSensitivitytoWOB,DTORor
4、pressuredropBearingthrustbalanceVolumetricAnalysisCirculationupriserorchokelineVariationswithpumpflowrate5PurposesControlformationpressuresDrivemotor/turbineProvidewellborestabilityCoolthebitCleancuttingsfromtheholebottomCleancuttingsfromthebitTransportcuttingstosurfaceDrillingFluidCirc
5、ulationBitHydraulics6PStdpipe=PSurf.Eq.+PDrillString+PMWD/Motor+PBit+PAnnulusPressureLossesSurfaceEquipmentStandpipeKellyHoseSwivelKellyDrillStringPipeCollarsBHAMotor/Turbine/MWD/LWDBitNozzlesAnnulusDrillStringPipeCollarsBHASurfaceEquipmentStandpipeKellyHoseSwivelKellyMotor/Turbine/MWD
6、/LWDBitNozzlesAnnulus7PressureLossesSurfaceEquipmentCase1SmallestlandrigsCase2MostlandrigsCase3MostOffshorerigsCase4Deepwaterrigs/floatersUserSpecified8TypesofHydraulicsModelsNewtonianFollowalinearrelationshipbetweenshearstressandshearrateViscosityisaconstant(Air,water&lighthydrocarbono
7、ils)Non-NewtonianModelsNon-NewtonianfluidsdonothaveaconstantviscosityTheshearstress-shearraterelationshipvariesdependingupontheviscosifier9TypesofHydraulicsModelsBinghamPlasticBinghamplasticmodelfluidsarecharacterizedbyayieldpointandaplasticviscositythatisindependentoftheshearr
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